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  #1  
Old 23-03-2007, 08:05 PM
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mick pinner
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16" Mirrors
l don't know if this has been mentioned but Bintel have the Lightbridge 16" mirrors coming for $1799.00.
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  #2  
Old 23-03-2007, 08:27 PM
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davidpretorius
lots of eyes on you!

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hmmmmmmmmmmmmm, me in the market for a mirror..maybe anyway!

I will swap your rcos 16" mirror for one of these Mick!
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  #3  
Old 23-03-2007, 08:29 PM
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Starkler (Geoff)
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From the Andrews website:
Primary mirror, 400mm (16") f/4 - available soon $1499.00

Could f4 be a typo ?
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  #4  
Old 23-03-2007, 08:32 PM
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I've been thinking of a 16" CASS project NESMYTH style!!
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  #5  
Old 24-03-2007, 01:38 PM
ausastronomer (John Bambury)
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Having an 18" diameter 2" thick pyrex mirror I can only echo Mark Suchting's comments about these mirrors in another thread. I think a 2" thick 16" diameter chunk of BK7 glass is going to have "MAJOR" cooling and thermal equilibrium issues. My 18" pyrex mirror can often take 4 to 5 hours to stabilise properly and deliver 1st rate planetary views. A BK7 mirror could take all night. Whilst the mirror substrate is relatively unimportant in apertures up to 12" it can matter in this aperture class. Just be aware of this before you "dive in" and drop your hard earned cash.

CS-John B
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  #6  
Old 24-03-2007, 04:23 PM
skies2clear
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http://www.iceinspace.com.au/forum/s...ad.php?t=16401

Previous comments worth reading in this thread, I think,

CS
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  #7  
Old 24-03-2007, 04:25 PM
skies2clear
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Oh and this thread too!

http://www.iceinspace.com.au/forum/s...ad.php?t=17102

CS
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